Distributor and signal generating system using the same

Distributor and signal generating system using the same

  • CN 107,546,455 B
  • Filed: 05/12/2017
  • Issued: 09/07/2021
  • Est. Priority Date: 06/27/2016
  • Status: Active Grant
First Claim
Patent Images

1. A dispenser (100) is provided with:

  • an input terminal (10);

    a plurality of output terminals (50-1, 50-2, …

    50-n); and

    a distribution unit (20) that distributes the high-frequency signals input to the input terminals and outputs the signals,the dispenser (100) is characterized in that,the distribution unit has a plurality of distribution unit outputs (30-1, 30-2, …

    30-n) and outputs the high-frequency signals distributed by the distribution unit outputs, respectively,further comprising a plurality of reflected wave suppressing units (40-1, 40-2, …

    40-n) connected to the outputs of the plurality of distribution units, respectively, for attenuating the reflected waves reflected from the output terminals, respectively,wherein the plurality of reflected wave suppression units (40-1, 40-2, …

    40-n) are respectively provided with attenuation units (60-1, 60-2, …

    60-n) for attenuating the reflected signal, each attenuation unit is configured to measure the transmission characteristics from the input terminal (10) to the output terminals (50-1, 50-2, …

    50-n) of the distributor (100) in advance, the attenuation sections are formed of thin film resistors, and the dispenser trims each attenuation section by laser trimming based on the transfer characteristics, and setting the attenuation amount to a fixed attenuation amount so that a signal level difference between a plurality of distributed high-frequency signals respectively output by the plurality of distribution sections is reduced to suppress a difference in signal level output by each of the plurality of output terminals;

    wherein the reflected wave is a distributed high frequency signal caused by a terminal contact failure or an impedance mismatch,the outputs of the plurality of reflected wave suppression units are respectively output from the plurality of output terminals.

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